(x + 5)(x^2 + 2x + 2)
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5x + 10 = 5(x+2) 6x2 + 12x = 6x(x+2) The only common factor is x+2
I suppose you mean, how do you factor it. 7x2 - 9x - 10 = (7x + 5)(x - 2).
x2-12x+20=0you can factor this equation into:(x-10)(x-2)=0set each factor equal to zero & solve for x to get:x=10 & x=2
If you mean: x^2 +12x +20 then it is (x+2)(x+10) when factored
21x2 + 27x - 30 = 3*(7x2 + 9x - 10) = 3*(7x2 - 5x + 14x - 10) =3*[x*(7x - 5) + 2*(7x - 5)] = 3*(7x - 5)*(x + 2)